172650720 has 192 divisors, whose sum is σ = 624879360. Its totient is φ = 39628800.

The previous prime is 172650703. The next prime is 172650727. The reversal of 172650720 is 27056271.

It is a super-2 number, since 2×172650720² = 59616542233036800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172650727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99460 + ... + 101180.

It is an arithmetic number, because the mean of its divisors is an integer number (3254580).

Almost surely, 2^172650720 is an apocalyptic number.

172650720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172650720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312439680).

172650720 is an abundant number, since it is smaller than the sum of its proper divisors (452228640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172650720 is a wasteful number, since it uses less digits than its factorization.

172650720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1761 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 172650720 is about 13139.6620961119. The cubic root of 172650720 is about 556.8302211434.

The spelling of 172650720 in words is "one hundred seventy-two million, six hundred fifty thousand, seven hundred twenty".